I just finished building a new arrow spinner/ broadhead aligner. I looked at several versions before I built one and liked the looks of the Dixon one the best. They quit making them but to me it looked like the best design. I liked the idea of an adjustable magnet so you could move the contact point based on different size diameter arrows.
I plan on using it to align broadheads as I use glue in inserts and sometimes they are off center after I glue them in. I also plan on using it to align outserts. I shoot super skinny shafts and they all use an outsert. I just bought some Aeroserts from firenock and they recommend a spinner to check if they are centered in the gluing process. BTW, these new outserts look very well made and consistent. Not cheap but well made.
For a simple piece of equipment, it was a bit of a pain to build. Trying to get all the bearings the same height and straight was a bit of work. What i thought was going to take an hour turned into about 3.
I have about $15 bucks in it but I have enough material left over to build another. Although I don't plan on it! lol